Click on the third or sixth rank to set the en passant target square.

EGTB: win in 4 half-moves

# move score
1 Kd7 win in 3 half-moves
2 Kd8 draw
3 Nb6 draw
4 Nc7 draw
5 Ke7 loss in 2 half-moves
6 Kf7 loss in 2 half-moves
7 Kf8 loss in 2 half-moves